Insulator plunging machine



July 21, 1936. v s. 1 MOORE 2,048,558. I

INSULATOR PLUNGING' MACHINE Filed Nov. 16, 1932 2 Sheets-Sheet l July 2l, 1936. s. MOORE INSULATOR PLUNGING MACHINE Filed Nov. 16, 1952 2 Sheets-Sheet 2 m n W Wd Szwa/PZL. Moore Patented July 21, 1936 i lUNITED STATES ff" Y 2,048,558

PATENT oFFIcE Application November 16,1932, Serial No. 642,946

Claims.

'l'heinvention ,relates to machines for working upon and shaping objects while in a plastic con- ;dition and has special reference to a machine .tor .recessing porcelain insulators While .in -a ,plastic 5 condition, though the use .is not necessarily limited to this purpose.

In Vthe manufacture of. porcelain `insulators Iit .is Well known that in cer-tain types there are recesses provided, .for one purpose or another, in `opposite sides, possibly .for the reception for accommodation of .metallic fittings or for some other reason. .Notably .in the bus -bar diaphragm lbushtype the porcelain piece is `formed -with recesses at opposite sides vseparated -by a relatively thin wall or diaphragm.. In Aother Varieties pins or. .their equivalent for suspension or other purposes or for the mounting of elements may 4be cemented in such recesses. Ordinarily it is a common practice to plunge -a recess in one side .and then cutout or bore `one Vin the other side, a method which is disadvantageous on account -of l,involving .separate steps, that is to say Adistinct and separateoperations which are not carried -out in the same machine.

lt is with the above facts in View that I have .devised thepresent invention kwhich `has for its general object lthe provision -o-f `a novel machineby ,meansvof which recesses may be plunged, 'in contradistinction to cutting, in opposite sides -ofa ,plastic :or green procelain -or other equivalent piece or fobject at the same time and by-a'single operation. Y Generally consideredfmy invention contem- .plates the provision of 1a suitable transmission ,mechanism :for moving -a pair Aof pl-ungers 'toward eachother, or away-from each-'other as the .case may be, -while they are rotating :and-are far ranged in axial alinement.. An important object of the invention .is to provide a machine of this characterembodyi-ng .a .novel mechanism which is manually controlled and which is for the .purpose of imparting the desired and in fact necessary reciprocatory movement to the plunger carrying spindles. Another object .is to ,provide means for adjusting the throw or in other words the extent foi movement of the plungers toward orirom each other, this being .dependent upon the thickness of the piece to be worked upon and the contem- '50 `plated thickness of Athe diaphragm or wall to ibe left between 'the opposed recesses. v v y A -vfurther vObjectis to provide a machine of this character which may be operated'without any necessity for unusual knowledge orsk-ill, which will do the work very 'rapidlyand which=-will turn :out aproduct which kwill be Yuni-form instead of there being variations in the dimensions :of the recesses as frequently occurs in the case of hand cutting. A-n :additional object vis to :provide a plunging 5 machine'of this variety which will be simple and inexpensive to make and assemble, easy to operate., positive :in action, ecient and durable in service, and a general improvement in the art.

Tothe attainment fo-f the foregoing and other l0 objects and advantages, the invention .preferably :consists in the details 'of construction and the 'arrangement and eombinationof parts to be here- .i-n'after .more fully Idescribed I'and claimed, and

illustrated in the accompanying drawings in 15 which:

.Figure il is a side 'elevation of Aa machine constructed in accordance with my invention,

, Fig-ure 2 is :a 'front elevation thereof,

Figure 3 is a fragmentary vertical .sectional `2() view taken through the .mechanism for effecting longitudinal :or reciprocatory movement `of the plunging means,

.Figure 4 is a detail section taken on the line 4-4 of Figure 3..

Referring more particularly to the drawings, I .have shown thedeyice as comprising anappropriatesuppor-'ting frame here represented as including nprights Ill .rising from a suitable -base ,structure ii andsconnected fat intervals by cross 30 Vbars I2. As amatter of fact the details of construction of theirame are not material -as it is .obvious thatit might be .made as -a single casting -or as a plurality of par-ts secured` together. In ...the present instance the lower portion of the '35 .machine is .represented as mounted within a pit l-3 fbut it'iszequa'lly :apparent that such is not neces- .sary :as it -xcould all be disposed 4above the floor level if preferred. .Thelstaticnary part-of the apparatus further includes .forwardly extending -or later- 40 yally arranged angle Abars t4 .supported by depend- .ing legs A5 *which are in turn connected `by Aother bars Hi. Theiorwardly extending angle bars lilV .are ifnrthepiupose.ofsupporting the work holder 4 5 which will be .described hereinafter.

ou-rnaled in bearings il appropriately mount- -ed at the top and bottom pf the frame are `shafts '.l8'f1carrying pulleys: 1.9 .about which is `trained la belt '20. Onesof the yshafts 18 is extended and 50 carries a drive pulley 2l engaged i'by a .drive :belt

22 which receives its'power :from lany preferred pri :convenient Source. Slidably :and rotatably.l

Iei-iga-lged through -l'x'earin'gs 23 lcarried by .brackets 2l iormi-ngpaiit'lof the 4*traine :are vertically :ar- ".55

' Yextend oppositely and which have .their outer ranged axially alined spindles 25 which Yhave their adjacent ends spaced considerably apart and equipped with plungerrs'or die headsV 275, the size and shape of which necessarily depends upon Y the :contemplated or desired size'and shape of the recesses to be formed in the clay piece or other object worked upon. Actually a setr of die 1 Vheads fof different Ysizes and y'shapes mightY be YVprovidedffor the machine, thenideabelng :that

Y VVbyvirtue of the gears 30-and121 the spindles 25 and consequently the die headsf25 .will'be -rotattici.V w Y Y It is Yan important VVfeature Vof 'A my invention to provide mechanism for effecting movementrof i the die heads orY plungers v2li toward and from each other. at the same time and at` the same Y' V'speed so that they i may Voperate simultaneously upon lthe'oloject to be plunged.' Incarrying `out` this Yfeature of thefiinvention IV provide a pairY j of'walking beams 3|Y pivotally connected Vvinter- Y Y ymediate'their endsas shoWnat `32vrwith links 33 Ain turn pivotedat 34 Vuponnlembers 35 carried by the angle brackets'Y 24. Atene end the walking beamsra're forked at 35 Vand straddlesleeves 3l to whichrthey arepivoted at 38. VThesel'sleeves .rotatably receive the spindles,25'and.are preventedrfrom longitudinalV movementV with respect {fsl I Vprovide a 'shaft' 4ngjouma1edm' suitable virigli).zontlle,spindles.;

to the spindles by` means; ofpairs of collars V39 For effecting Ymovement of the .Walking beams Y bearings 4|,` equipped with a hand wheel'42, and

Y carrying gears 43Which.mes h with-other .gears A4 on YstubVV shafts 45V journaled in bearings 46'.- ;Journaled in other bearingsV 4lY 'areV stub shafts x48 carryingrcrank arms 49V havings1ots5|lV there-VIV ,in within which are engaged... bolts .5| passing through slots 52 in the gears V44Y and-also Vpassingthronghwthe inner endsgofflinks 53 which VVYVVendsfpivoted 'at 54 .tor` the. other ends` of the Y frwalking Vbeams ,31. Y For making adjustments in Y thelength of the llinks :they maybe formed of Vsections zonne'ctedby turnbucklesjL55. The bearin'gs'lll and 4'lfare represented as being in alineiApairand the bearingsf4|` 45- and 41 are'shown Y Y as formed integrally upon `segment shaped plates 60 nient as. are also Vthe shafts'451and 48 of:` each orlbrackets 56 secured tothe confronting sides Y ofV theuprights |70 thoughzithisis simply a mei chanical detail. *The 'purposef-.of1'-lthe YVslots 501v VVVandg52 is to'm'ake it Vpossible to adjust'thethrow Yof thefli'nk's 53 an'd consequently the extentlof movement'rofVv the spindles 25 andV die'heads Y25 toward orffrom each other','fit.being. clearv that the bolts `5| may be secured'in'any desiredrpo- Y' gsitionsradially ,along the slots' 50 Yand` 527.." It 1s also ,apparent ,that by .means ofthisadjustment one spindle may be `given va greater. 'movement (than theother ifsuchisrdesiredgf; Y

' while in a-plastc condition. A plastic clay pieceV after the plunging has been effected.v J y Y A Inxtheoperation, it is ofcou'rseapparent'lthat `the belt 22 isfdrivenlso as to .effect Ycontinual @This Acauses thesleeves 31,1 betwee'n the v'collars The operator then Yrotates the.. hand .wheel toV effect reverse movement ofithe linksv and walkling beams-so;V that therspindleswill be retracted 3' from the clay piece, after which the form fcon- Ytaining the clay piece is removed and set aside From the foregoing'description and c, the drawings it will be apparent that I have thus provided a simple machine.V involvingfbut 1a" few Vparts and which is ,readilyr controlled .and .operelse. {Naturally-.there norestrlction .to whether or-not both spindles'move-the' sameV .me claires.bsreuntaepmndedf is represented at 51 as held within a. formf58,

usually;Y constructed ofv plaster Vof Paris or ,theV

fw'ith guides 59 slidably `'receiving guide tongues Y 6|)Y on theside edges of a table or shelf 6| which Y is apertured'to receive Ythe'depending lower portion of therform 58;` Theslidability ofthis shelf `1 orY table makes itl a simple matter for the op V 'erator to'placfe in position thereon a form con- .taining thev clay pieceY 5`|, shove Yit into place between thedie headajand then move it` back rotation voffthe shafts I8, 'gears 30 and y21`|` andV Y consequently'rthe spindles 25 and die headsl.y

Normally or initially the spindles are maintained Z5V in separated position withxthe dieheads 26 spaced Y apart. vWith' the'taloleVV or shelf6| in retracted position the operator places within the opening therein lthe form 58 and then slides-,the 'shelf the links 5a w111- be mpvledaway from eeen other,

Y thereby rocking the walking beams'3l1uponthe1r pivots 32, the links 33 of coursegpivoting .uponj 1 their pivots 34 so that the forward ends of ,the

walking beams will Ymove Vtoward each: othergY with, within 'Qheslcts provided'for theipurpo'se, 3 'i i K 39 Vtournove the 'spindles 25 Vtoward each; other Y YWhile they .ro tate. The spindles will of-c'ourse VengageV and penetrate the ,opposite sidesr of Vthe clay'piece and form the desiredrecess'es'therein.

and'c'replaced by another one, whereupcntheVV cycle .of operations is repeated..

ated;Y for theY purpose.V c ofV forming recesses V`Vvvin opposite Vsides of an object Vin Vplastic/condition regardless of vWhe'therit be an insulatoror'some-V distance orrwha'tever maybe Athe size, shape and different sizes- It is belleved'fromthe above :that Y Ythe construction, ,operation and advantages will readily apparentzto one'skilledfinfth'e alrtianfd 'it is also beneved that it win be'elee'rtnatmy VVchanges' may be resorted .to'in the'detailsof con- Y. .struction andthe, arrangement and=combination 5 L As mentioned in the objects .of the'i'nventionit .is the specific purpose ofthe machinel'to plunge recesses in opposite. sidesnfiaprcelajn .insulator of parts provided such"l constitute no Vd epartnre Y from thesplrit of thexinventicnigolj the scope of fsof f any af I Having thus described the invention, I claim:

1. A machine of the character described comprising a supporting structure, spaced alined spindles journaled therein, a transmission mechanism for imparting rotation to said spindles, plunging elements on the adjacent ends of said spindles, means for supporting between said plunging elements a plastic object to be recessed thereby, pivoted Walking beams operatively connected at one end with said spindles for moving the same longitudinally, links pivotally connected with the walking beams, crank means pivotally connected with said links, and hand operated gear means for moving the crank means, and mean for adjusting said crank means to vary the throw of the links and walking beams.

2. A machine of the character described comprising a supporting structure, spaced alined spindles journaled therein, a transmission mechanism for imparting rotation to said spindles, plunging elements on the adjacent ends of said spindles, a horizontal guide having channeled sides in opposed relation, an apertured shelf having its edges slidable along said channeled sides for supporting between said plunging elements a plastic object to be recessed thereby, pivoted walking beams operatively connected at one end with said spindles for moving the same longitudinally, gears journaled on said supporting structure, said links being connected with said gears eccentrically of the latter, a shaft journaled in the supporting structure and equipped with a hand wheel, and gears on said shaft meshing with said first named gears.

3. A machine of the character described comprising a supporting structure, vertically spaced alined spindles journaled therein, means for rotating said spindles, plunging elements on the adjacent ends of said spindles, means including Walking beams for moving said spindles toward or from each other, guides on the supporting structure at a point opposite the space between the plunging elements, and a shelf slidable along said guides and adapted to support an object to be engaged by said plunging elements, said shelf having an opening therein for receiving the object which projects therethrough to expose its opposite sides to the action of the plunging elements.

4. An insulator plunging machine comprising a supporting frame, vertically alined spindles journaled in said frame in spaced relation to each other, means for constantly rotating said spindles, a horizontal shaft journaled in said frame at a point intermediate the adjacent ends of the spindles, means for rotating said shaft, a pair of pinions on said shaft, a pair of countershafts journaled in said frame above and below said rst named shaft, gears on said countershafts meshing with the respective pinions, another pair of shafts mounted in said frame in horizontal alinement with and in spaced end to end relation to said pair of shafts, crank arms on said last named pair of shafts, said crank arms and said gears being formed with alined radial slots, Walking beams pivoted by links intermediate their ends to the frame, pitmans connected with one end of the respective walking beams and having bolt connections Within the slots in said gears and crank arms, collars rotatably and non-slidably mounted cn said spindles and pivotally connected with the other ends of the respective walking beams, and a support slidably vmounted on the frame at a point intermediate the adjacent ends of the spindles for supporting an object, and plunging elements on the adjacent ends of said spindles engageable simultaneously with opposite sides of the object.

5. A machine of the character described comprising a supporting structure, spaced alined spindles journaled therein, a transmission mechanism for imparting rotation to said spindles, plunging elements on the adjacent ends of said spindles, means for supporting between said plunging elements a plastic object to be recessed thereby, pivotally mounted walking beams operatively connected at one end with said spindles for sliding the same longitudinally, crank means operatively connected with said walking beams, means for driving the crank means, and means for adjusting said crank means to vary the throw of the walking beams.

STEWART L. MOORE. 

